Drilled mine 45 x 5 x 35. Very smooth, awesome ball straight up ten. Can get a little touchy with transition, but has become my mainstay ball at thr moment. Helped me average over 210 in Vegas sweeps recently. Definitely bringing it to Reno for nationals in May.

Drilled it 50x3.5x35... This is the best ball to have in the bag, period.... The motion is pure to what a benchmark piece should be and build around it. The versatility is amazing, the shape you can create on different conditions and oil volume is out of this world... Stop messing around and get you a BIG BRO KO... Its a true KNOCK OUT.

Swag's pearls give a great set of diverse looks, and the Big Bro K.O. is no exception. It is very clean through the fronts and mids, and still relatively rolly with the Dominance core, but is sharper off the friction than my Joker Wild or what I've seen from other staffers throwing the Incredible X. Have only thrown it on heavy house conditions thus far, but I think it'd be a great sport shot ball, especially for speed-dominant players or when the heads get toasted late in the block.

I like the big bro KO to me I think if I set it up a different way I would like it just as much as the joker maniac. one thing I can say about the big bro KO it didn't let me down it put up some good numbers for me. And I still maintain average or a little bit over.

This is now the Big Ball in my bag (next to Graffiti I-CON). Surface unchanged goes smooth through the heads, stores the energy well with strong back-end. Now a must have in my bag. (Left hander, stroker, 14.5 - 16mph)

Love love love this ball! I’m right handed and gave a decent amount of revs… this ball has awesome back end action and piles through the pins!

Out of the box this ball was a bit too strong for me to play where I wanted to play (up the right side). After throwing it for a couple of weeks I decided to polish it and hit it with a 3000 pad. This allowed me to move left and get a little swing with the ball.

Absolute beast of a ball. Top 5 I’ve thrown in my life. No matter what layout you have on it, it will hook and it’s just amazing. Hence why I now have 3.

This ball is the first ball out of the bag on league night. The Big Bro K.O. allows me to play up the lane without any fear of leaving a corner pins. The hitting power is unbelievable. This is my new benchmark ball.

love this ball right out of the box no change to the surface at all just drill and go very smooth down lane and a nice clean turn to the pocket. has been a great ball for fresh oil on the house shot

This ball is a must have in your arsenal. Clean through the fronts and reads the lane very good, and this ball really does K.O. The pocket First time out the box with no alteration to the surface, 781. Awesome piece of equipment.

This ball is amazing I get it to move very well this is a must have it really gets start when the ball is dropped it covers so strong

Bowler Stats:
Two-handed
420-450 Rev Rate
Ball Launch Speed 21 MPH
Axis Tilt 15 Degrees. 45 Degrees of rotation standard.
Ball Layout: 4 1/2 x 4 x 1 1/2

I am absolutely loving this ball! This ball reads the mid-lane and continues hard through the pins. On a fresh house shot, I found myself left of the 4th arrow and the ball still was hooking through to the 8 pins.

I cannot wait to get this ball on a sport shot!

This ball has changed my game! Very strong ball that will not disappoint. Depending on the shot and how it transitions I can throw this ball all 3 games and it crushes the pocket! This ball will always be in my bag!

I drilled mine up 55 x 5 1/8 x 40. Ball made it through the heads with easy. I initially bowled on THS. I stood 33ish crossing around 18. I could play tight or swing to 5. Like most CB equipment, the ball hit hard and carried well. This ball will definitely stay in my bag for a heavy pearl.